intr.h revision 1.18
1/* $NetBSD: intr.h,v 1.18 2000/08/22 19:46:29 thorpej Exp $ */ 2 3/* 4 * Copyright (C) 1997 Scott Reynolds 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#ifndef _MAC68K_INTR_H_ 31#define _MAC68K_INTR_H_ 32 33#include <machine/psl.h> 34 35#ifdef _KERNEL 36 37/* spl0 requires checking for software interrupts */ 38 39/* 40 * This array contains the appropriate PSL_S|PSL_IPL? values 41 * to raise interrupt priority to the requested level. 42 */ 43extern unsigned short mac68k_ipls[]; 44 45#define MAC68K_IPL_SOFT 0 46#define MAC68K_IPL_BIO 1 47#define MAC68K_IPL_NET 2 48#define MAC68K_IPL_TTY 3 49#define MAC68K_IPL_IMP 4 50#define MAC68K_IPL_AUDIO 5 51#define MAC68K_IPL_SERIAL 6 52#define MAC68K_IPL_ADB 7 53#define MAC68K_IPL_CLOCK 8 54#define MAC68K_IPL_STATCLOCK 9 55#define MAC68K_IPL_SCHED 10 56#define MAC68K_IPL_HIGH 11 57#define MAC68K_NIPLS 12 58 59/* These spl calls are _not_ to be used by machine-independent code. */ 60#define spladb() _splraise(mac68k_ipls[MAC68K_IPL_ADB]) 61#define splzs() splserial() 62 63/* 64 * These should be used for: 65 * 1) ensuring mutual exclusion (why use processor level?) 66 * 2) allowing faster devices to take priority 67 */ 68#define spllowersoftclock() spl1() 69#define splsoftclock() _splraise(mac68k_ipls[MAC68K_IPL_SOFT]) 70#define splsoftnet() _splraise(mac68k_ipls[MAC68K_IPL_SOFT]) 71#define spltty() _splraise(mac68k_ipls[MAC68K_IPL_TTY]) 72#define splbio() _splraise(mac68k_ipls[MAC68K_IPL_BIO]) 73#define splnet() _splraise(mac68k_ipls[MAC68K_IPL_NET]) 74#define splimp() _splraise(mac68k_ipls[MAC68K_IPL_IMP]) 75#define splaudio() _splraise(mac68k_ipls[MAC68K_IPL_AUDIO]) 76#define splclock() _splraise(mac68k_ipls[MAC68K_IPL_CLOCK]) 77#define splstatclock() _splraise(mac68k_ipls[MAC68K_IPL_STATCLOCK]) 78#define splsched() _splraise(mac68k_ipls[MAC68K_IPL_SCHED]) 79#define splserial() _splraise(mac68k_ipls[MAC68K_IPL_SERIAL]) 80#define splhigh() spl7() 81#define spllock() spl7() 82 83/* watch out for side effects */ 84#define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0()) 85 86/* 87 * simulated software interrupt register 88 */ 89extern volatile u_int8_t ssir; 90 91#define SIR_NET 0x01 92#define SIR_CLOCK 0x02 93#define SIR_SERIAL 0x04 94#define SIR_DTMGR 0x08 95#define SIR_ADB 0x10 96 97#define siron(mask) \ 98 __asm __volatile ( "orb %1,%0" : "=m" (ssir) : "i" (mask)) 99#define siroff(mask) \ 100 __asm __volatile ( "andb %1,%0" : "=m" (ssir) : "ir" (~(mask))); 101 102#define setsoftnet() siron(SIR_NET) 103#define setsoftclock() siron(SIR_CLOCK) 104#define setsoftserial() siron(SIR_SERIAL) 105#define setsoftdtmgr() siron(SIR_DTMGR) 106#define setsoftadb() siron(SIR_ADB) 107 108/* intr.c */ 109void intr_init __P((void)); 110void intr_establish __P((int (*)(void *), void *, int)); 111void intr_disestablish __P((int)); 112void intr_dispatch __P((int)); 113 114/* locore.s */ 115int spl0 __P((void)); 116#endif /* _KERNEL */ 117 118#endif /* _MAC68K_INTR_H_ */ 119